vSphere Update Manager – Remediation failures due to removable media

This is something that has caught me out a few times before so I thought I’d quickly post about it.

Have you have ever tried to remediate a cluster using VUM and encounter a message something like this?:

vum - error

The message itself doesn’t tell a lot, leaving you to dive into the error logs within vCenter. This can be quite tedious particularly if you don’t know what to look out for. The best place to start is searching for entries containing “Error”…surprise surprise šŸ˜›

In this particular scenario I have several VM’s with removable media attached to them, bear in mind your particular scenario could be different and may have nothing to do with removable media!

Digging through the VUM logs (normally found underĀ C:\Users\All Users\VMware\VMware Update Manager\Logs or C:\Documents and Settings\All Users\Application Data\VMware\Update Manager) we come across a file namedĀ vmware-vum-server-log4cpp.log.

Browsing through the file searching for any errors we find the following entry:

vum - log error

Aha! We now have an explanation to why the remediation failed! You might think the easiest way to fix this is to check each of the VM’s in the cluster and remove any removable media devices…

While it is probably a good idea to remove these generally speaking there may be valid reasons for having them attached. Hence why VUM has a great feature found under “Maintenance Mode Options”!

BEHOLD!

vum - remediate disable media

 

By ticking the box at the bottom the remediation task will automatically disable any attached removable media devices allowing the task to complete successfully.

Anyway, I hope this little trick helps others out there who are wondering why their cluster remediations aren’t completing!

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About Ben Loveday
My name is Ben Loveday and I am working as a Systems Architect in New Zealand. I have a keen interest in VMware products and are VCAP5-DCD, VCAP5-DCA and Microsoft MCITP certified. I am studying towards VCDX5 certificationā€¦I hope! My areas of focus are the virtualisation of manufacturing automation systems with the aim to improve traditional automation/SCADA system design and improve their availability and reliability. I am married with three kids and my hobbies include playing the guitar (less often than Iā€™d like) and listening to music, mostly 80ā€²s Metal and Rock/Blues :-) Oh..and I'm a PC gamer!

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